Electrofusion joint

Details Electrofusion joint Electrofusion joint

1988-07-27

1990-05-29

Griffin, Donald A.

Electric heating

Heating devices

With heating unit structure

H05B 358

Patent

active

049298178

ABSTRACT:
An electrofusion joint used as a pipe joint for plastic pipes, wherein a coil electric heating wire is embedded inside and it is heated by application of an electric current after insertion of the plastic pipes to cause fusion/adhesion at the contact surface therebetween. The characteristic feature is to use one or more means of items (a) to (c) below to improve adhesion of the coil and the resin constituting the joint:

REFERENCES:
patent: 3315986 (1967-04-01), Quick
patent: 4313053 (1982-01-01), Sturm
patent: 4618168 (1986-10-01), Thalmann et al.
patent: 4684789 (1987-08-01), Eggleston
patent: 4695335 (1987-09-01), Lyall
patent: 4718698 (1988-01-01), Hill

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